Yuki Kitazawa
From Wikipedia, the free encyclopedia
In the anime Gravitation, Yuki Kitazawa is the man from Eiri Yuki's past whom caused all of his emotional issues. He was his tutor in America, since Yuki was sent there to study because of his non-Japanese looks. Kitazawa always seemed to be a cool, collected and generally happy person with no wrong intentions. Although his dark side emerges when he drinks, which is when Yuki happened to come to him at the wrong time.
Kitazawa allowed men to abuse Yuki when he was younger, at the shallow price of 10 dollars. Kitazawa's life ended shortly after, when Yuki shot him, in self-defense. Still, afterward it has left scars on Yuki that he will carry for the rest of his life.
Tohma Seguchi was the one who found Yuki at the apartment and comforted him afterward. He feels responsible for what happened to Yuki because he was the one who hired Kitazawa as his tutor, and feels that he didn't look into him enough and could have prevented the disaster.
On Yuki's part he cared for Kitazawa, but it not known whether it was a love or just a friendship he desired. Yuki took on Kitazawa's first name, Yuki, as his pen name.
however, in the manga, it's shown that actually Eiri had a deep affection for his tutor. Then one night he was forced into a room where he belived Kitazawa intended to rape him. the thought allarmed him, but he didn't feel an extreme anger until two other men appeared and asked if they could go 'first' for $10, to which the boy's tutor laugned and tells them he isn't bothered. in the manga, it's the thought that Kitizawa didn't care about Eiri to want to go first that made him the most angry, and why it effected him the way it did.